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Is the deep-sea crab Chaceon affinis able to induce a thermal stress response?

Is the deep-sea crab Chaceon affinis able to induce a thermal stress response?
Is the deep-sea crab Chaceon affinis able to induce a thermal stress response?
Fluctuations in the stress level of an organism are expressed in behavioural and molecular changes that can affect its ecology and survival. Our knowledge of thermal adaptations in deep-sea organisms is very limited, and this study investigates the critical thermal maximum (CTmax) and the HSR in the deep-sea crab Chaceon affinis commonly found in waters of the North East Atlantic. A mild but significant HSR in Chaceon affinis was noted and one of the lowest CTmax known amongst Crustacea was revealed (27.5°C at 0.1 MPa; 28.5ºC at 10 MPa). The thermal sensitivity of this species appears to be reduced at in situ pressure (10 MPa), given the slightly higher CTmax and the significant 3-fold induction of stress genes hsp70 form 1 and hsp70 form 2. Although C. affinis deep-sea habitat is characterized by overall low temperature this species appears to have retained its ability to induce a HSR. This capability may be linked with C. affinis’ occasional exploitation of warmer and thermally instable hydrothermal vent fields, where it has been found foraging for food.
1095-6433
54-61
Mestre, N.C.
af51d167-71b2-41b5-b46c-8b1b785dfc8d
Cottin, D.
9e3449e4-0c77-4b0c-a40e-1944af86cb2d
Bettencourt, R.
b4a2897e-1427-41ea-8e5f-e22451b01967
Colaco, A.
f6ef0aa9-78b7-4803-9552-33ad8d8ae5a7
Correira, S.P.C.
68d29634-31b4-44b2-b652-7eec6440cf2e
Shillito, B.
4f84c279-55ee-4aa4-9c48-21b15bd71603
Thatje, Sven
f1011fe3-1048-40c0-97c1-e93b796e6533
Ravaux, J.
c1ae600d-cc08-4f99-9c29-bc719963c46f
Mestre, N.C.
af51d167-71b2-41b5-b46c-8b1b785dfc8d
Cottin, D.
9e3449e4-0c77-4b0c-a40e-1944af86cb2d
Bettencourt, R.
b4a2897e-1427-41ea-8e5f-e22451b01967
Colaco, A.
f6ef0aa9-78b7-4803-9552-33ad8d8ae5a7
Correira, S.P.C.
68d29634-31b4-44b2-b652-7eec6440cf2e
Shillito, B.
4f84c279-55ee-4aa4-9c48-21b15bd71603
Thatje, Sven
f1011fe3-1048-40c0-97c1-e93b796e6533
Ravaux, J.
c1ae600d-cc08-4f99-9c29-bc719963c46f

Mestre, N.C., Cottin, D., Bettencourt, R., Colaco, A., Correira, S.P.C., Shillito, B., Thatje, Sven and Ravaux, J. (2015) Is the deep-sea crab Chaceon affinis able to induce a thermal stress response? Comparative Biochemistry and Physiology. Part A: Molecular & Integrative Physiology, 181, 54-61. (doi:10.1016/j.cbpa.2014.11.015).

Record type: Article

Abstract

Fluctuations in the stress level of an organism are expressed in behavioural and molecular changes that can affect its ecology and survival. Our knowledge of thermal adaptations in deep-sea organisms is very limited, and this study investigates the critical thermal maximum (CTmax) and the HSR in the deep-sea crab Chaceon affinis commonly found in waters of the North East Atlantic. A mild but significant HSR in Chaceon affinis was noted and one of the lowest CTmax known amongst Crustacea was revealed (27.5°C at 0.1 MPa; 28.5ºC at 10 MPa). The thermal sensitivity of this species appears to be reduced at in situ pressure (10 MPa), given the slightly higher CTmax and the significant 3-fold induction of stress genes hsp70 form 1 and hsp70 form 2. Although C. affinis deep-sea habitat is characterized by overall low temperature this species appears to have retained its ability to induce a HSR. This capability may be linked with C. affinis’ occasional exploitation of warmer and thermally instable hydrothermal vent fields, where it has been found foraging for food.

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Published date: 2015
Organisations: Ocean and Earth Science

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Local EPrints ID: 371925
URI: http://eprints.soton.ac.uk/id/eprint/371925
ISSN: 1095-6433
PURE UUID: 574fc018-2aa7-4d90-ab12-4340448cef32

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Date deposited: 20 Nov 2014 09:19
Last modified: 08 Jan 2022 18:13

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Contributors

Author: N.C. Mestre
Author: D. Cottin
Author: R. Bettencourt
Author: A. Colaco
Author: S.P.C. Correira
Author: B. Shillito
Author: Sven Thatje
Author: J. Ravaux

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